Air chisel. Find a good spot on the outside of the lock, make a good groove to put the chisel head in to, and break it loose like that, then use channel-lock pliers or vice grips to get it off the rest of the way.
lmao man that sounds like something i would do.whitelightning2 said:lol, i was gonna say the old hammer a craftsman socket onto it and ratchet it off. Why Craftsman you say? because you get it replaced for free :wink: